Friction-clutch



V(No Model.)

F. `o. DESGHAMPS.-

FRIGTION GLUTCH.'

Patented 1366.5, 11882.

. PATENT EETCE.

FRANCIS O. DESCHAMPS, OF PHILADELPHIA, PENNSYLVANIA.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 268,463, dated December 5, 18.82.

Application filed May 1, 1882. (No model.)

v10 a'll whom it may concern:

Beit known that 1, FRANCIS O.DEscHAM1 s, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Friction- Olutches, of which the following is a specifica-` tion, reference being had therein to the accompanying drawings, Wherein- Y Figure l represents a longitudinal section, partly in elevation, of my improved frictionclutch; Fig. 2, au elevation, partly sectional, of the same. Fig. 3 is a perspective of orne of' the clutch-shoes. Fig/1 is a broken elevation of hub and loose Wheel. Fig. 5 is an elevation of shifting-lever and collar, the latter being in section; and Fig.6 is an elevation of the clutchshoes, partlysectional, with con nectin g screws, pinions, and racks.

My invention has for its object to provide an improved friction-clutch 5 and it'oonsistsin the novel combination, construction, and arrangement of parts, having reference to the employment of rack-and-pinion mechanism for effecting the engagement and release ofthe frictionshoes or clutching devices.

Referring to the accompanying drawings, A represents a sleeve designed to be rigidly secured to a shaft, B. Said sleeve is provided with an annular rim, a., which is diametrically recessed or cut away at ci n.

C O represent the clutch-shoes, which are of a substantially semi-cylindrical form', having inner tapering sides, ce, lugs c2 c2, and flanges c3 c3. Said shoes are placed Within the chamber A', .formed by the sleeve-rim a, with their lues c2 c2 ro'ectin throu h the recesses a a and the flanges c3 c3 standing outside of said rim, as shown. One of the lugs c2 of each shoe has a plain or smooth: opening, c4, and the remaining lug of each shoe is provided with a threaded opening, c5.f Said shoes are so ar- Arangedwithin chamber A' as to have the lugs j with the smooth openings c4 opposed to or paired with the lugs havingthe threaded openings 05, as shown in Fig. 6.

D represcntsa hub, its periphery d tapering to correspond With the inclination of the sides c c of the shoes C, to provide a clutching-surface for said sides. Said hub has a flange, d', by means of which the hub is secured to a Wheel or pulley, E, as shown in Fig.. 4, which is designed to be loosely mounted on a shaft to form the clutch-pulley; or said hub may be thereby attached to a collar, E', tirrnl y secured to a cut-ofi' shaft, B', as illustrated in Fig. 1.

F F represent pins or bolts, having heads f. pinions f', and screw or threaded endsfz. These bolts connect to each pair of the lugs c2 c2 of the shoes G C, as shown in Fig. 6 4. e., the-smooth parts]cd of the bolts pass through the plain openings c4 cLL of said lugs, while the screw-ends]2 thereot'en gage With'the threaded openings c5 of the opposed lugs. The effect of such construction is that when the. pinionsj" are rotated in one direction the shoes C C are simultaneously drawn together, and are in like manner separated from each other when said pinions are reversely rotated. y

Gr represents a sliding-collar mounted on the sleeve A, and is provided with a screw or pin, g, which enters an elongated slot, A2, in said sleeve, whereby said collar is caused to revolve with the sleeve. rlhe collar Gr has arms g g formed thereon or-secured thereto, carrying racks g2 g2,whicl1 engage with the pinionsff, as indicated in Fig. 1

H represents a loose hub on shaft B, held -in place by collar I and set-screw Said hub is provided with arms h 7L. To the arm 7i is pivoted at h2 the shifting-lever K., The handle end k of said lever passes through a slot, h3, in arm h', as shown. Said lever is secured at L l to the usual band, L, surrounding the collar Gr.

The operation is obvious. As the lever K is shifted to the left the collar G with racks g2 are slid in the same direction. The pinions f f are rotated and cause the shoes C C to approach each other until they effect a clutchengagement with thehub D. At the same time the shoes G G are moved longitudinally by the pressure or strain of the movin g-racks against said pinions until the lianges c3 c3 ot' It will be noticed that the sleeve A has allV the parts of the clutch secured to or placed thereon, so that a very compact clutch is obtained, and which occupies but little space upon the shaft.

The provision of the flanged hub and shoes increases the area of clutching-surface between said parts over and above that that could be obtained if said flanges be dispensed with.

The same means and power employed to effeet the clutch-engagement are also used to release the same, thereby dispensing with springs and other similar devices heretofore provided for that purpose. Hence, in my improved clutch, there is no liability of the shoes C CA setting upon hub D when clutch-engagement between said parts is eifected.

I have shown and described the shoes C C and hub D as having correspondingly tapered or inclined` sides; but, if desired, said sides may be formed of an even thickness or with straight sides.

If desired, pins P P, working in slotsp p of sleeve-rim a, maybe employed for retaining the shoes C C in chamber A of sleeve A, said pins also serving to relieve the lugs c2 o2 of undue strain, which might otherwise fall thereon if said pins be not used.

What Iclaim is- 1. In a friction-clutch, a sleeve rigidly vsecured to the driving-shaft and constructed,

substantially as shown and described, to form a bearing or chamber for the clutch-shoes, and a seat for the sliding collar carrying mechanism for operating said shoes, substantially as set forth.

2. In a friction-clutch, the combination,with the clutching shoes carrying pinions, of a sliding collar provided with racked arms to engage with said pinions, substantially as shown and described.

3. The combination, with a hub, l),of shoes C C, havingepinions ffl, sleeve A, collar G, having racks g2 g2, substantially as shown and described.

.4.. The friction-clutch shoe C, having lugs Y c2 c2, one of which is provided with a plain or smooth opening, c4. and the other with a threaded opening, c5, substantially as shown vand described.

5. The combination of sleeve A, shoes G C, constructed substantially as shown and described, the pins F, having pinionsf, and collar Gr, with racks g', substan tially as set forth.

6. In a friction-clutch,.the combination of the following elements: a sleeve adapted and designed to receive the friction or clutching shoes and a sliding collar, said shoes being connected by pins carrying pinions,and said collar having racksito engage with said pinions, substantially as shown and described.

7.'The friction-clutch shoe C, having lugs c2 c2, with smooth and threaded openings o4 c5 and ange c3, substantially as shown and described.

8. In a friction-clutch, the combination, with the clutching-shoes C C, flanged at c3, the hubl D, flanged at d', ofa carrier for said shoes, and mechanism for causing said shoes to clutch with said hub, substantially as shown and described. t

9. In combination with shoes C G, having lugs c2 c, with opposed plain and threaded openings, the pins F F, having smooth partsf3 and threaded endsfzfz, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

vFRANCIS O. DESCHAMPS. Witnesses:

S. J. VAN S'rAvoREN. CHAs. F. VAN HORN, J r. 

